This post is for Broken Cable Detector Circuit using IC CD 4069. In this circuit there is no need to open wire to check, it work like metal finder but find AC current in wire but not in metal. Furthermore, it uses chip CD 4069 and this chip has small switches to turn ON light […]
Single Push Button ON OFF Relay Circuit
We can make Single Push Button ON OFF Relay Circuit with one push button to control motor or light. Press button and relay will turn ON and then press again and relay will turn OFF; hence, there is no need of microcontroller or timer IC, so use only some transistors and one capacitor. Circuit Working: […]
Touch Alarm Circuit using IC 555
Touch metal part and buzzer makes sound and this uses IC 555 in monostable mode. IC 555 is good for learning in simple circuits and in this Touch Alarm Circuit using IC 555 when someone touches the metal plate then buzzer makes loud alarm. Circuit Working: Parts List: Components Values Quantity Resistors 1M 1/4 watt […]
Electronic Horn Circuit using IC 555
Using popular IC 555 we can make Electronic Horn Circuit for cycle, alarm or fun use, as this Electronic Horn Circuit using IC 555 and one 8Ω speaker makes loud horn sound for car or alarm. Furthermore, one 555 IC work as astable multivibrator which means it make square wave by switching high and low […]
AC Power Outlet with Timer Circuit
Unlike a standard wall outlet, this AC Power Outlet with Timer Circuit incorporates a built-in timer; as a result, it functions as a timer plug, also known as an outlet timer. Also, we can plug other device into it. Furthermore, a small chip called the 555 timer acts as the brain of the circuit, also […]
Tachometer Circuit
This easy to build Tachometer Circuit is a small DIY tool to check speed of rotating shaft or disc; we used tachometer to know how fast shaft or wheel spin in RPS (revolutions per second). Furthermore, this simple circuit uses two 7-segment displays and one slotted opto sensor MOC7811 where all parts are easy to […]